Coal-saver and smoke-consumer



0. L. SALVESEN. COAL SAVER AND SMOKE CONSUMER.

APPLICATION FILED MAY 24. 1919.

Patented Dec. 21, 1920.

WW W m m 6 M w 0. L. SALVESEN.

COAL SAVER AND SMOKE CONSUMER.

APPLICATION FILED MAY 24, l9l9- Patented Dec. 21, 1920.

2 SHEETSSHEET 2.

aumwtz QLSMI/mcrg wi tmooeo OLE L. SALVESEN, 0F LAWRENCE, KANSAS.

COAL-SAVER AND SMOKE-CONSUMER.

Specification of Letters Patent.

Patented Dec. 21, 1920.

Application filed May 24, 1919. Serial No. 299,568.

T 0 all whom it may concern:

Be it known that I, OLn L. SALVESEN, a citizen of the United States,residing at Lawrence, in the county of Douglas and State of Kansas, haveinvented new and useful Improvements in Coal-Savers and Smoke-Consumers,of which the following is a specification. I

The present invention is in the nature of an attachment for the smokepipes of furnaces, stoves and the like, whereby a circulation of airfrom the exterior will be admitted centrally to the pipe to mix with theproducts of combustion passing through the pipe and to insure theconsumption of combustible gases in the said products of combustion, andconsequently allow only smoke entirely free from soot and combustiblegases to pass through the pipe.

The improvement is in the nature of a combined smoke consumer and fuelsaver, is of a simple construction and may be readily attached to thesmoke pipe of any ordinary furnace or the like.

Other objects and advantages will present themselves as the nature ofthe invention is better understood, reference being had to theaccompanying drawings, in which:

Figure 1 is an elevation of a stove or furnace pipe provided with theimprovement.

Fig. 2 is a sectional view approximately on the line 22 of Fig. 1.

Fig. 3 is a longitudinal sectional View approximately on the line 3 3 ofFig. 2.

Fig. 4: is a transverse sectional view approximately on the line 44 ofFig. 3.

Fig. 5 is a sectional view approximately on the line 55 of Fig. 3.

Fig. 6 is a sectional view approximately on the line 66 of Fig. 3.

Fig. 7 is a perspective view of the cylindrical valve.

The improvement is designed to be attached to the smoke pipe ofa stove,furnace or the like close to the said stove or furnace. The deviceincludes a pipe member 5 that has its ends received in the confrontingends of the stove pipe section 6. Surrounding the pipe member 5 is acylindrical drum 7 that has flanged ends 8, secured to the pipe 5. Thespace between the drum 7 and the pipe 5 provides an air chamber 9. Thedrum 7 adjacent one end thereof is provided with spaced openings 10 thatprovide the air inlets to the chamber 9. These openings are controlledby a valve ,in the nature of a cylindrical band 11 that surrounds thedrum. The band is guided in suitable lips or flanges 12 on the drum. Theband is provided with spaced openings 13 that are designed to be broughtin register with the openings 10. The band 11 is provided with anoperating handle 14:, whereby the band may be turned on the drum tobring the openings therein in register or out of register with theopenings 10 in the drum 7 The pipe 5, near the end of the drum 0p positethat provided with the valve con-.

trolled openings 10, has inwardly extending radially arranged ducts 15that communicate with a tubular member 16 near one of the closed endsthereof. The tubular member is coextensive with the pipe 5 and issustained centrally therein by radially disposed braces 17 arrangedbetween the said pipe and the tube 16. In the tube 16 there is centrallyarranged a pipe member 18 that has one end spaced away from the end 19of the tube 16. This tube extends through the second closed end 20 ofthe tube 16 and the said tube is supported by engagement with the wall.provided by the opening in the said end 20 while the opposite end isheld in proper spaced relation to the tube 16 by radially disposed bracemembers 21. The projecting end of the pipe 18 is provided with spacedoutstanding fingers 22, and to these fingers is secured a baflle plate23. The smoke from the furnace finds an outlet through the spaces 24between the ducts 15. The valve 11 is regulated to permit of airentering the chamber 9 through the openings 10. 'This air is partlyheated by the smoke passing through the smoke pipe and through the'pipe5. The air enters the tube 16 through the radially disposed ducts 15 andis directed toward the end 19 of the said tube. The air is superheatedin its passage through the tube, and passes toward the closed end 19thereof, from where it is directed through the small pipe 18 toward thebaffle 23, and passes into the smoke pipe 6 through the passages 25between the fingers 22. The heated air mixing with the prod.- ucts ofcombustion passing through the smoke pipe mixes with the gases in theprod nets of combustion, causing the same to be consumed by theadditional oxygen thus supplied, and as a result only smoke entirelyfree of carbon and combustible gases pass through the pipe.

The improvement, it will be noted, is of an extremely simple nature, maybe attached to any smoke pipe in an easy, convenient and secure manner,will assure the consumption of all combustible gases passing through thepipe, and consequently checks the draft from the furnace which willresult in a great saving of fuel as a perfect combustion of all gasespassing through the pipe is insured, and consequently less fuel will berequired in the furnace in producing the maximum amount of heatrequired.

Having thus described the invention, what is claimed as new, is

A device for the purpose set forth, adapted to form a section of a smokepipe, including a drum having flanged ends and provided with air inlets,a valve controlling the inlets, a pipe extending through the flangedends of the drum and designed to be connected to the sections of a smokepipe, a second pipe of a less length and diameter than the firstmentioned pipe coaxially arranged therein, said last mentioned pipehaving closed ends, radially disposed air ducts between the first andlast mentioned pipe members, a pipe member of a less cross sectionaldiameter than the last mentioned pipe member extending through one ofthe closed ends of the latter and spaced away from the second closed endthereof, means for retaining the last mentioned pipe mem bers in coaxialalinement, said last mentioned pipe member having its outer end providedwith extending fingers, and a baffle secured to the ends of the saidfingers.

In testimony whereof I afiix my signature.

OLE L. SALVESEN.

